SB2025091879 - Improper locking in Linux kernel dlm
Published: September 18, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091879
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper locking (CVE-ID: CVE-2022-50373)
CWE-ID: CWE-667 - Improper Locking
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the dlm_lowcomms_new_msg() and dlm_lowcomms_commit_msg() functions in fs/dlm/lowcomms.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/27d3e646dd83bafd7094890462eebfce3ac31e4a
- https://git.kernel.org/stable/c/30ea3257e8766027c4d8d609dcbd256ff9a76073
- https://git.kernel.org/stable/c/de7fdff754bb4d01e38e19964c309b6df6a79472
- https://git.kernel.org/stable/c/eb97e60a9eae632ff9104a580dbc4fdc58dc23cb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17